Serenity was found dead of blunt-force trauma on her living room floor in July 2010. Her 4-year-old brother Isaiah, who was also a foster child, was asleep in another room.

The foster mother, Carla Garcia, called her sister to tell her about the death, and Garcia's sister called police. By the time police showed up, Carla Garcia and her husband Alberto were gone, suspected of fleeing south of the border.

The death of her granddaughter left a deep emotional impact on her family, said the child's grandmother. And, while she said she no longer holds anger toward Alberto and Carla Garcia, the grandmother said she does want an explanation of what happened that day.

"I hope that they will be honest enough, not cowardly, to tell me what happened to my grandchild," said Maese.

Thursday, the FBI confirmed that the Garcias have been taken into custody for the toddler's murder. It is working with Bakersfield police to extradite the couple to the United States.

The FBI couldn't say if the Garcias had their other children with them when they were taken into custody. In the summer of 2010, police believed the couple had taken their 5- and 4-year-old children with them, in addition to Carla Garcia's son from a previous marriage.

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We are a grass roots, completely non-profit volunteer organization. The sole mission of our foster care blogs is to raise the national level of attention on foster care and foster children, to advocate for positive change and workable solutions in the system. We aim to make America aware of the ordeals faced by foster children within the system and aged out of the system. We are most concerned with educational stability, educational achievement, permanency and the unique needs of transition-aged children. We use media tools to influence and improve public policy and opinion on the issue of foster care, to promote successful solutions and to identify lapses within the foster care system and to encourage positive change.